For the past week, our charming girl Halloumi has decided that the litter tray is a fun dig box and is constantly sitting in it to eat hay...and then flipping the dig switch and digging the whole lot out all over the floor! She has never done it before and the other two in the fluffle don't do it. But it's very annoying to keep having to sweep it all up and it's also making the house stink of urine because she is constantly agitating it. I also worry she might end up getting urine burn on her feet if she's always rummaging around in it. Any tips on getting her to stop? I have looked at one of those litter trays with sides and a grate on it but I am not sure about them. Thanks!